Accessories for oscillating power tools

An accessory for an oscillating power tool comprising:

• an attachment portion configured to be coupled to an oscillating power tool;
• a working portion extending generally along a longitudinal axis, the working portion having a rear end portion coupled to the attachment portion, a front cutting edge opposite the rear end portion, a first side edge extending from the front cutting edge to the rear end portion, and a second side edge opposite the first side edge and extending from the front cutting edge to the rear end portion, the working portion including an at least partially curved surface that contains the longitudinal axis, at least a portion of the first side edge including a first side cutting edge portion, wherein the working portion is configured to cut a curved opening in a workpiece.

An accessory for an oscillating power tool comprising:

• an attachment portion including a planar portion that lies in a first plane, the attachment portion configured to be coupled to an oscillating power tool;
• a working portion including a rear end portion and a curved portion extending from the rear end portion along a longitudinal axis A, the curved portion having a curved front cutting edge opposite the rear end portion, a first side edge extending from the front cutting edge toward the rear end portion, and a second cutting edge opposite the first side cutting edge and extending from the front cutting edge toward the rear end portion, the working portion configured to cut a curved or circular opening in a workpiece,
• wherein a position of the working portion relative to the attachment portion is user adjustable between a rear position and a forward position, the rear position being closer to the attachment portion than the forward position.